Molecular testing uncovers new Phytophthora taxa from natural ecosystems in Western Australia

Stukely, M.J.C., Webster, J.L., Ciampini, J.A., Burgess, T.I., White, D., Dunstan, W.A. and Hardy, G.E.St.J. (2009) Molecular testing uncovers new Phytophthora taxa from natural ecosystems in Western Australia. In: Phytophthoras in Forests and Natural Ecosystems Fourth Meeting of the International Union of Forest Research Organizations (IUFRO) Working Party S07.02.09, August 26–31, 2007, Monterey, California.

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Abstract

Verification of mapping of the extent of Phytophthora dieback disease, based on shadowless colour aerial photography, involves the routine testing of soil and root samples collected from beneath dying, Phytophthora-sensitive native plant “indicator species” for the presence of the pathogen. In addition to P. cinnamomi, other isolates have been recovered on selective agar following the baiting of soil, or the direct plating of plant tissue, during these operations. These have been identified, using morphological characters, as P. citricola, P. megasperma, P. cryptogea, P. drechsleri, P. nicotianae, and P. boehmeriae.